DYKIE RS8428B5-BK Indoor Humidity Monitor with Temperature Gauge Humidity Meter and Black Hygrometer Thermometer Great use in bedroom kitchen office children room workshop or on travel Measures temperature (Celsius or Fahrenheit) and humidity Records Daily highs and lows temperature and humidity Temperature Humidity level icon indicates high, low, or ideal indoor conditions Stylish design, comes with hang hole & bracket to hang on the wall or stand on the tabletop. Power By : 2 x 1.5V AAA Battery( not included) display OK when humidity 25%~55% display HIGH when humidity &gt; 55% display LOW when humidity &lt; 25% Temperature range: 0 ~50(32~122) Humidity range: 20~90%RH Temperature display unit: C F selectable.<br> <br>